I visited this WHS in August 2014. The first glimpse and enriching experience was by car after having visited the Coa Valley. There were street signs indicating the area inscribed as a WHS and several winding roads that lead to the terraced vineyards. Plenty of grapes on the vines when I visited. Then I enjoyed the captivating views of the Alto Douro valley from the Douro itself on board a boat tour I booked from Oporto. This is definitely a more relaxing experience but I must say that visiting by car on the whole was my favourite experience of the two. To wrap up I decided to visit Graham's cellars at Vila Nova de Gaia to taste the Alto Douro produce and learn about the history of Port-making. Bliss!